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Yeah. But how does it help?
I can get data using CComBSTR just as well.
But these macros:
<br />
BEGIN_COLUMN_MAP(CUserRowset)<br />
COLUMN_ENTRY(1, m_bstrID)<br />
COLUMN_ENTRY(2, m_bstrDescription)<br />
....<br />
END_COLUMN_MAP()<br />
for linking fields to members require members to be CComBSTR (or _bstr_t you are talking about). But my members are CString and/or std:string
and I don't want to convert the rest of my code to use BSTRs.
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inner wrote:
I don't want to convert the rest of my code to use BSTRs.
You must whenever using COM interfaces. It is the COM form of string. Unless you want to use byte arrays which are not easier. At least _bstr_t has simple conversion interface to char and wchar making life easy to use CString and std::string/wstring 
-- signature under construction -- -pete
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I have a win32 application that I'm using to test some stuff (just basic algorithm) and timing the execution of the program depending on the file I drop on the exe. When it's done, it displays a messagebox with the amount of time it took to complete the operation. However, if it takes a long time, the DOS-looking console window is displayed the whole time. I don't want any window displayed except the messagebox signaling that the event is over. How can I accomplish this?
[insert witty comment here]
bdiamond 
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Why not the old ShowWindow (hWnd, SW_HIDE)
And in order to get the hWnd, either
// change current window title to something *UNIQUE*
SetConsoleTitle(title);
// ensure window title has been updated
Sleep(40);
hWnd = FindWindow(NULL, title);
// If found, hide it
if (hWnd)
{
ShowWindow(hWnd, SW_HIDE);
}
Or if only for Win 2000 (XP ...) use the GetConsoleWindow
HWND (WINAPI* gpfnGetConsoleWindow)() = (HWND (WINAPI*)())
GetProcAddress(GetModuleHandle(_T("kernel32.dll")), "GetConsoleWindow");
if(gpfnGetConsoleWindow)
{
hWnd = gpfnGetConsoleWindow();
}
Papa
while (TRUE)
Papa.WillLove ( Bebe ) ;
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Hey 
I seam to have problem using RichTextBox.
I´ve written the following pice of code:
case WM_CREATE:
HWND hRich;
hRich = CreateWindowEx(WS_EX_CLIENTEDGE, RICHEDIT_CLASS, "",
WS_CHILD | WS_VISIBLE, 0, 0, 100, 100, hWnd, NULL, GetModuleHandle(NULL), NULL);
if(hRich == NULL)
MessageBox(hWnd, "Could not create RichTextBox.", "Error", MB_OK | MB_ICONERROR);
break;
if(!hRich) runs and I get the message that RichTextBox couldnt be created. Anyone got any idea whats wrong?
I´m using Visual Studio .NET 2003
Thanks.
humpa humpa
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Read up in the MSDN on the function CreateWindowEx. I believe that in order for you to use the RICHEDIT_CLASS you must first call the RegisterClass or RegisterClassEx to register your RICHEDIT_CLASS.
If the function succeeds, the return value is a class atom that uniquely identifies the class being registered. This atom can only be used by the CreateWindow, CreateWindowEx.
Tom Wright
tawright915@yahoo.com
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i don't know if this is it, but does your application need to call AfxOleInit()?
[insert witty comment here]
bdiamond
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SuperTank wrote:
Anyone got any idea whats wrong?
How about calling GetLastError()?
"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen
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I acctualy got it working. All I had to do was to add LoadLibrary("Riched20.DLL");
It seams to be very common fault.
humpa humpa
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I am deriving from CStatic class to create a CStatic with customized font and coloration .
But my problem is that during creation how do I and where do specify the Font to be used ?
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you can create the font in the constructor; you might need to override the Paint method.
Maximilien Lincourt
Your Head A Splode - Strong Bad
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Is it possible to declare a series of variables and then assign a pointer to the start (i.e. the first variable).
I wish to use a user defined database which will hold the display format, type and an offset into the variables location in memory.
Basically I will fill an array of item details and declare the items;
e.g.
static ITEM_DETAILS items[NO_ITEMS] = {<br />
"%0.2f", display format<br />
"float"
"£",
"Current Cost"
, "0000"
<br />
"%d", display format<br />
"unsigned short"
"N/A",
"Number of Units",
"0004"
<br />
etc<br />
};Now the items will be declared as follows:-
float cost;
unsigned short noOfItems;
CString itemName;
etc
Now my question is how do I go about declaring a pointer to the first variable (start of the memory that the variables are held) and is it OK to add offsets to this pointer, i.e. to obtain data item2 (noOfItems which has the offset 0004)
e.g.
LPVOID ptr = &cost; // Pointer to the start of the memory location
so to access the item noOfItems I would do the following:-
int offset = atoi(items[1].offset);
data = *(ptr + offset);
I need the variables in contagious memory and is a LPVOID the right choice.
I was thinking of shared memory, but I have always used a structure to access items and not a general pointer.
Any help please.
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Check the macro offsetof, it would be what you need
It is used along with a structure.
Papa
while (TRUE)
Papa.WillLove ( Bebe ) ;
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Thanks for the info, however I have a problem with the bit fields (I know that you cant use the macro with these fields) but its the extra byte thats the problem, as I could just manage the field fileds aa a 2 byte hex item.
#pragma pack(1)<br />
typedef struct<br />
{<br />
unsigned short i; <br />
float f; <br />
char c; <br />
unsigned short bit41 : 4;<br />
unsigned short bit42 : 2;<br />
unsigned short bit43 : 1;<br />
char s;<br />
unsigned short x;<br />
double y;<br />
double z;<br />
} SFOO;<br />
<br />
union<br />
{<br />
SFOO fields;<br />
unsigned short buffer[32];<br />
}test_data;<br />
<br />
#pragma pack()<br />
<br />
void main(void)<br />
{<br />
printf("Offset of 'c' is %u ", offsetof(SFOO, c));<br />
printf("Offset of 's' is %u ", offsetof(SFOO, s));
This gives Offset of 'c' is 6 Offset of 's' is 9; I was expecting 8, see below:-
f f i i
Bits c f f
x x s
y y y y
y y y y
z z z z
z z z z
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The bit fields gave me a problem with the offsetof.
See new post
http://www.codeproject.com/script/comments/forums.asp?forumid=1647&select=908749
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raed wrote:
BOOL b = dbRecord.CanUpdate();//here Debug assertion failure rasied ,WHY?
I don't know, you tell us. You should have been presented with a message box containing the file name and line number of the failed assertion. Given those two, we might be of more help.
"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen
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Dear:
the message box information that appear will assertion failure occured
Debug Assertion failure
....
File: f:\vs70builds\9466\vc\MFCATL\ship\atlmfc\include\afxdb.inl
Line: 58
....
....
thats all
Regards
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The CRecordset::CanUpdate asserts on this and If the recordset is open, and since u didnt open it it gave u the assertion, thus my suggestion to Check CRecordset::Open
afxdb.inl:
----------
ASSERT_VALID(this);
ASSERT(IsOpen());
Papa
while (TRUE)
Papa.WillLove ( Bebe ) ;
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ok,i check IsOpen() for recordset and return that the recordset is not Open , but when i open the record set like this:
CDatabase database;
database.OpenEx("DSN=HomeDSN;uid=sa;pwd=");
CRecordset record(&database);
record.Open(AFX_DB_USE_DEFAULT_TYPE,"SELECT * FROM Clients",CRecordset::none);
...
..
it works fine
but when do this:-
record.Open(AFX_DB_USE_DEFAULT_TYPE,"UPDATE Clients SET ClientName = 'Sam' WHERE ClientID ='00014'",CRecordset::none);//Assertion occured
WHY?
Thanks
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Hi,
I've got a single document application that has a CFormView for the main window, then inside the CFormView I have a CTabControl that uses a custom CDialog class for each tab. I would like to move the event handling from the main CFormView class to the CDialog class for each tab. When I add a event handler to the dialog class it never gets called. Is this how you would code a tab control and why doesn't this work?
Thanks
Hua-Ying
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Hi All
i have an application in which i use a ini file to store settings,
the user reads and writes to it
i use WritePrivateProfileString to write to the ini file
and GetPrivateProfileString to read from it
my problem is, is a lot of people who use my application do not
have admin rights..so cant write back to to the ini file
does anyone know a way round this ??
ive thought about using the registry, HKEY LOCAL MACHINE you need admin
rights for
I cant use HKEY CURRENT USER as there may be many users using my app
all who share the same settings,
Any one any ideas ???? 
ta
si
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si_69 wrote:
a lot of people who use my application do not
have admin rights..so cant write back to to the ini file
In what folder does the .ini file reside?
si_69 wrote:
I cant use HKEY CURRENT USER as there may be many users using my app
all who share the same settings,
That's what that hive is for. If three people use the same machine, they each need their own settings saved to the HKCU hive. If there are settings that need to be in effect regardless of who is using the machine, then those go in the HKLM hive.
"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen
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DavidCrow wrote:
In what folder does the .ini file reside?
its stored in the application folder off program files
c:\program files\myapp
does that make a difference ?
DavidCrow wrote:
If there are settings that need to be in effect regardless of who is using the machine, then those go in the HKLM hive
the problem with that is you cant write back to HKLM in non administative mode and the
user doesnt have adminostrator rights
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